Unsaturated Behaviour of Earthfill Dams

  • A. Modaressi
  • A. Michali
Conference paper
Part of the International Centre for Mechanical Sciences book series (CISM, volume 397)


The computation and safety analysis of earth dams requires a good knowledge of soil behaviour and a global understanding of the phenomena involved. For example, pore pressure distribution within earth dam, presence of the air, etc, should be analysed through out the dam life. A unified approach covering the dam behaviour and different phenomena encountered during construction, consolidation an impounding is considered. This approach covers both mechanical and hydraulic behaviour of multiphase soil. The role of the introduced parameters is demonstrated through a parametric study of a homogeneous earth dam (La Ganne). Laboratory tests performed on the material of this dam have been used to calibrate the model parameters, which have then been used in a Finite Element computation to estimate the behaviour of the dam. These results are compared to the measured quantities obtained by the dam monitoring.


Pore Pressure Effective Stress Void Ratio Unsaturated Soil Saturated Soil 
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  1. ABOUBEKR N. (1995). Modélisation du comportement mécanique et hydraulique des sols partiellement saturés. Thèse de Doctorat, École Centrale de Paris.Google Scholar
  2. ALONSO E.E., GENS A. and JOSA A. (1990). A constitutive model for partially saturated soils. Géotechnique 40: 405–430.CrossRefGoogle Scholar
  3. AUBRY D., HUJEUX J.C, LASSOUDIERE F. & MEIMON Y. (1982), A double memory model with multiple mechanisms for cyclic soil behaviour, Int. Symp. Num. Mod. Geomech., Balkema, pp 3–13.Google Scholar
  4. AUBRY D., MODARESSIA (1996). Manuel Scientifique GEFDYN.Google Scholar
  5. BIAREZ J., FLEUREAU J.M. & TAIBI S. (1993), Constitutive model for unsaturated granular media, Proceedings of the Second International Conference on Micromechanics of granular Media. Birmingham.Google Scholar
  6. BISHOP and BLIGHT (1963). Some aspects of effective stress in saturated and partially saturated soils. Géotechnique, n° 3, vol. XIII, pp. 177–197.CrossRefGoogle Scholar
  7. HUJEUX J.C (1985), Une loi de comportement pour le chargement cyclique des sols, Génie Prarasismique, Ed. V. Davidivici, Presses ENPC, pp. 287–302.Google Scholar
  8. KOHGO Y., NAKANO M. & MIYAZAKI T. (1993a), Theoretical aspects of constitutive modelling for unsaturated soils, Soils and foundations, Vol. 33, No 4, 49–63.CrossRefGoogle Scholar
  9. KOHGO Y., NAKANO M. & MIYAZAKI T. (1993b). Verification of the generalized elastoplastic model for unsaturated soils, Soils and foundations, Vol. 33, No 4, 64–73.CrossRefGoogle Scholar
  10. FRENDLUND D.G (1979). Appropriate concepts and technology for saturated soils. Canad. Geotech. J., 16, 121–139.CrossRefGoogle Scholar
  11. MATYAS E.L. and RADHAKRISHNA H.S. (1968). Volume change characteristics of partially saturated soils. Geotechnique, 18, 432–448.CrossRefGoogle Scholar
  12. LLORET A. and ALONSO E.E (1985). State surfaces for partially saturated soils. 11th I.C.S.M.F.E. Vol.2, San Francisco, pp. 557–562.Google Scholar
  13. MICHALI A. (1994). Méthode pour l’identification des paramètres d’une loi élastoplastique à partir d’essais de laboratoire et in-situ-Modélisation numérique du tassement d’un remblai sur sol compressible. Thèse de Doctorat, École Centrale de Paris.Google Scholar
  14. MODARESSI A. and ABOUBEKR N. (1994). Constitutive model for unsaturated soils: Validation on a silty material. Numerical Methods in Geotechnical Engineering, Proceedings of theThird ECONMIG, I.M. Smith (ed.), Balkema.Google Scholar
  15. MODARESSI A., ABOUBEKR N. & FRY J.J. (1995). Unified approach to model partially saturated and saturated soil. Third European Conference on Numerical Methods in Geomechanics, Manchester, Balkema eds., pp. 91–96.Google Scholar
  16. OZANAM-HAUTEFEUILLE O. (1988). Modélisation numérique des sols élastoplastiques non saturés-Application aux barrages en remblais. Thèse de Doctorat, ECP.Google Scholar
  17. POULAIN D. (1993). Pressions interstitielles de construction dans les barrages homogènes en matériaux argileux humides. Thèse de Doctorat, Université de Bordeaux I.Google Scholar
  18. ROSCOE K.H. and BURLAND I.B. (1968). On the generalised stress-strain behaviour of wet clay, Engineering Plasticity, Cambridge, pp. 535–609.Google Scholar
  19. TAIBI S. (1994). Comportement mécanique et hydraulique des sols soumis à une pression interstitielle négative. Etude expérimentale et modélisation. Thèse de Doctorat, ECP.Google Scholar
  20. VAN GENUCHTEN R. (1980). A closed form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Science AM. Soc, 44, 892–898.CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Wien 1998

Authors and Affiliations

  • A. Modaressi
    • 1
  • A. Michali
    • 1
  1. 1.École Centrale de ParisChâtenay-MalabryFrance

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